Issue 13, 2017 - One-step preparation of graphene/black phosphorene supercapacitors

One-step preparation of graphene/black phosphorene supercapacitors

Recently, Wu Zhongshuai, a researcher at the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, and Ren Wencai, a researcher at the Institute of Metal Research, Chinese Academy of Sciences, prepared a two-dimensional black phosphorene and graphene composite microelectrode
with a stacked structure by one-step filtration with mask plate assistance.
The electrode can be transferred directly to a flexible substrate as a planar supercapacitor and exhibits excellent energy density and good mechanical flexibility
in ionic liquids.
The results were published in American Chemical Society-Nano
.

The research team used highly conductive graphene nanosheets and high-capacity black phosphorene nanosheets as electrode materials, and constructed a composite microelectrode with a stacked structure with a high conductive graphene/black phosphorene pattern through a simple one-step filtration method with the assistance of parallel cross templates, and applied the electrode to a planar supercapacitor, which showed high operating voltage (3V) and energy density (11.
6mWh/cm3)
in ionic liquid.

In addition, the planar supercapacitor can still maintain good performance
in a highly bent state.
This device processing strategy is not only simple to implement, but also eliminates the need to add conventional metal current collectors, internal interconnects or contacts during device fabrication, allowing modular devices to be constructed for high capacity and output voltages
.